|
|
Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 437 - 011 | |||||
| (Last updated 18.mar.2002) | |||||
Name of Deposit Area : Myssmørdalen |
| (Object Id : 0437,011,00,00) |
| Location |
| County : | Hedmark (04) | Municipality : | Tynset (0437) |
| Map 1:50000: | Kvikneskogen (1619-4) | Map 1:250000: | Røros |
| Marking point: | Longitude: | 10.4504050 | Latitude: | 62.4645670 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 574804 m. | Y-coord: | 6926774 m. |
|
|
| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Sulphides | |
| Element(s): | Kis |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: | 40 m3 |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 18.mar.2002 by Jan Sverre Sandstad) |
Operations |
| From - To | Activity | Comments | |
| 1974 - 1974 | Inspection | Company/Institution :A/S Sulfidmalm | |
| 1998 - 1998 | Sampling | Company/Institution :NGU |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Volcex | Form: | Lens | |
| Main texture: | Structureless | Min. distribution: | Disseminated (<20 % ore minerals) |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: | No country rock alteration |
| Strike/Dip: | 22 / 25 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Neoproterozoic |
| Province: | Caledonides | |
| Geotec.unit: | Trondheim Nappe Complex | |
| Tectonic complex: | Gula Nappe | |
| Igneous complex: |
| Group: | Gula | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Garnet | Major mineral (>10%) | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Amphibole | Major mineral (>10%) | |
| Ore mineral | Pyrrhotite | Major mineral (>10%) | |
| Ore mineral | Magnetite | Subordinate mineral (1-10%) | |
| Ore mineral | Chalcopyrite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Garnet amphibolite | Extrusive Original rock :Basalt |
|
| Metamorphic facies :Amphibolite | |||
| Wall rock | Quartz biotite schist | Sedimentary Original rock :Greywacke |
|
| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Foliation | Strike/Dip :22 / 25 | Post-mineralisation ;...Effect :Modifies | |
| Wall rock | Schistosity | Strike/Dip :25 / 20 | Post-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| Forekomsten ligger sør for Tunntjørnan og nord for Myssmørdalsfjellet. En sti går inn mot området fra Tunndalen i sør. Det er ikke kjent når skjerpingen foregikk, men Musmerdalens gruve er inntegnet på eldre kart (Bredesen 1903). I sørvestskråningen av en liten ås finnes en stoll som er 2 m bred, 3 m lang og 1.8 m høy. Den er påsatt i en granatførende amfibolitt som er sulfidførende i 3-4 meters mektighet. Amfibolitten er 15 m mektig og har varierende granatinnhold. Kvarts-biotittskifer ligger tektonostratigrafisk under amfibolitten. Mineraliseringen i skjerpet består av svak til sterk disseminasjon av hovedsakelig magnetkis og mindre mengder magnetitt og spor av kobberkis (prøve .01-.03). Grunnmassen er sammensatt av kvarts, granat og amfibol, som dels er svært grovkornet og nekformet. Massiv sulfidmineralisering er ikke observert. I tillegg finnes en rekke mindre rustsoner i dette området som domineres av kvarts-biotitt skifer i veksling med dels granatførende amfibolitt. Det kan være vanskelig å bestemme om det har foregått skjerpeaktivitet på disse, og ofte dreier det seg om rustfargete skifre med lavt sulfidinnhold. |
Bibliography: |
| From NGU's Reference Archive: |
| Nilsen, Odd , 1978 |
| Caledonian sulphide deposits and minor iron-formations from the southern Trondheim region, Norway. |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.340;35-85 + k pages |
| Abstract: | |
| Within the southern and central parts of the Trondheim region of the Norwegian Caledonides a great number of small, stratabound cupriferous pyrite deposits are confined to mafic metavolcanics of the Gula, Støren and Fundsjø Groups of the Lower Palaeozoic succession. The deposits occuring within, or in close contact with the metavolcanics are characterized by their association with minor manganiferous oxide/silicate iron-formations - better known as "vasskis" ore type - within the metamorphic low-grade areas. The iron-fprmations of the metamorphic higher grade terrains on the other hand, which are extensively developed within the Gula Group, are mostly of a pyrrhotitic sulphide/silicate type and sulphurization processes are thought to have played an important role during the metamorphism. The pyrite deposits occurring adjacent to the metavolcanics bear no relationship to the iron-formations. They are embedded in pelitic, often carbonaceous assemblages (Gula Group) or within tuffitic members of the volcanogene Støren Group, and they are thought to represent re-sedimented (reworked) deposits. The pyrite deposits display varying degree of metamorphic reconstitution and a tectonic control has apparently determined their disc- or ruler-shaped morphology. |
| Bredesen, B. , 1903 |
| Kvikne grube. Ertsforekomster 1:10 000 |
| ;Norges geologiske undersøkelse;KART;Bergarkivet; No.K 2105 |
| References not to be found in NGU's Reference Archive.: |
| Sivertsen, R. 1975: Geological, geophysical and diamond drilling investigations in the Kvikne area 1974. Project 905.20. Bergvesenet rapport nr. BV 1014, 21s. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| HE0108.01 | Dump |
|
||||
| HE0108.02 | Dump |
|
||||
| HE0108.03 | Dump |
|
| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 437 - 011 Myssmørdalen |
Element analyses |
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.) |
| Sample No. | Sample Type | Cu* | Zn* | Pb* | Co* | Ni* | Ag* | Au# |
| HE0108.01 | Dump | 470 | 7 | 6 | 42 | 90 | .2 | 3.0 |
| HE0108.02 | Dump | 1638 | 13 | 4 | 52 | 115 | .2 | 5.0 |
| HE0108.03 | Dump | 451 | 6 | 7 | 45 | 95 | .2 | 3.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
| HE0108.01 | 8.0 | 16.0 | 1 | .1 | 7 | 1.00 | 10 | 3 | 6.76 |
| HE0108.02 | 5.0 | 13.0 | 1 | .1 | 10 | 1.00 | 9 | 2 | 7.54 |
| HE0108.03 | 7.0 | 15.0 | 1 | .1 | 34 | 1.00 | 2 | 2 | 6.28 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
| HE0108.01 | 187 | 60 | 1166 | 21.08 | 4.00 | 8.00 | 1 | 66.0 | 36.00 |
| HE0108.02 | 26 | 21 | 962 | 15.56 | 4.00 | 4.00 | 1 | 22.0 | 19.00 |
| HE0108.03 | 137 | 29 | 1454 | 16.94 | 3.00 | 4.00 | 1 | 111.0 | 27.00 |
| ------------------ |
| Sample No. | B* | ||||||||
| HE0108.01 | 2 | ||||||||
| HE0108.02 | 2 | ||||||||
| HE0108.03 | 2 |
| The fact sheet was created on 18.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |